JK
J.P. Karia
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As electricity generated from variable renewable energy sources grows, the grid requires storage capable of bridging extended low-wind, low-solar periods over which neither batteries nor pumped hydro remain economical, and establishes hydrogen as a viable seasonal energy carrier. At the 1–100 MW distributed scale, no combustion-based technology combines fuel-cell efficiency with gas-turbine operability. This thesis evaluates the thermodynamic feasibility of an internally fired H2/O2 cycle in which water, held above its critical pressure, is heated directly by combustion without crossing the liquid-vapour saturation dome. A zero-dimensional model compared expansion architectures and optimised cycle performance using a particle swarm algorithm, benchmarked against the
supercritical CO2 HYCOS cycle. To assess the compactness of the cycle, a preliminary turbine sizing was also performed. ...
supercritical CO2 HYCOS cycle. To assess the compactness of the cycle, a preliminary turbine sizing was also performed. ...
As electricity generated from variable renewable energy sources grows, the grid requires storage capable of bridging extended low-wind, low-solar periods over which neither batteries nor pumped hydro remain economical, and establishes hydrogen as a viable seasonal energy carrier. At the 1–100 MW distributed scale, no combustion-based technology combines fuel-cell efficiency with gas-turbine operability. This thesis evaluates the thermodynamic feasibility of an internally fired H2/O2 cycle in which water, held above its critical pressure, is heated directly by combustion without crossing the liquid-vapour saturation dome. A zero-dimensional model compared expansion architectures and optimised cycle performance using a particle swarm algorithm, benchmarked against the
supercritical CO2 HYCOS cycle. To assess the compactness of the cycle, a preliminary turbine sizing was also performed.
supercritical CO2 HYCOS cycle. To assess the compactness of the cycle, a preliminary turbine sizing was also performed.
Environmental Impact Reduction Through Aircraft Design
A Feasibility Study on a Low-Emission, High-Capacity, Short-to-Medium Range Aircraft
Bachelor thesis
(2024)
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J. Bartmanski, G.H.P. Drijfhout, A.N. Entchev, M. Fulton, J.P. Karia, M. Martins de Castro, A. Sahakyan, B. Verweij, J.A. Wichers, S.D. Bootsma, F. Yin, F. De Domenico, S. Chellini, A. Amiri Simkooei
The demand for commercial aviation is growing at an annual rate of 4%, posing significant environmental challenges. Large-capacity aircraft designed for long ranges are often used on short-to-medium range routes, leading to inefficient fuel consumption and higher emissions. With a future market need for aircraft seating 211 to 300 passengers, there is a clear gap for such a passenger airliner. This report examines the feasibility of the X-300 EcoFlyer, a proposed short-to-medium range aircraft with reduced environmental impact. Designed to carry 300 passengers over 3000 km, the X-300 aims to achieve 25% lower CO2 emissions, 50% lower NOx emissions, and 20% lower noise emissions compared to the Airbus A320neo. The study covers aircraft functions, system design, performance analysis, manufacturing, sustainability, operations, logistics, business viability, and technical risks. The findings confirm the X-300 EcoFlyer's potential to meet future demands with lower environmental impact. Innovations include a noise-shielding fuselage, a water-injected turbofan engine, in-wheel electrical taxing, and an electrical environmental control system. Overall, the X-300 EcoFlyer represents a promising solution to the challenges facing the future of high-capacity air transport.
...
The demand for commercial aviation is growing at an annual rate of 4%, posing significant environmental challenges. Large-capacity aircraft designed for long ranges are often used on short-to-medium range routes, leading to inefficient fuel consumption and higher emissions. With a future market need for aircraft seating 211 to 300 passengers, there is a clear gap for such a passenger airliner. This report examines the feasibility of the X-300 EcoFlyer, a proposed short-to-medium range aircraft with reduced environmental impact. Designed to carry 300 passengers over 3000 km, the X-300 aims to achieve 25% lower CO2 emissions, 50% lower NOx emissions, and 20% lower noise emissions compared to the Airbus A320neo. The study covers aircraft functions, system design, performance analysis, manufacturing, sustainability, operations, logistics, business viability, and technical risks. The findings confirm the X-300 EcoFlyer's potential to meet future demands with lower environmental impact. Innovations include a noise-shielding fuselage, a water-injected turbofan engine, in-wheel electrical taxing, and an electrical environmental control system. Overall, the X-300 EcoFlyer represents a promising solution to the challenges facing the future of high-capacity air transport.